Automatic switch.



F. A. :-Umoms. AUTOMATIC SWITCH.

AFPUCATION FILED NOV 20,1916.

Yateneda Jan. 29, 1918.

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A mina/l into non-selectable posi connection with one oi tliein., is

' the carriage and replacing tl-ie iein'iinel rod 'wire of the tcunli pair neen known that if, lniinn; .d lim-momen i nih 'en of the United idiotes? residing en' oi'k, in elle county of New Yoirl and otnue of New York, have invented oeil-ain new and useful. Improvements in Automatic Sii/italies, of which the following is o foil, clem?, concise, and emot deeeiipion ylfhie, invention nele/ters lo oidonmtie swioloee for interconnecting eleplione linen. adapted for use with eiibl. oni-toinn'uio oi? senii-nutonnatio tel., )hone iiz syeeioe,

The object of this inveni n lio pro-- vide new me simple ineens; loif connecting ooliing subscriber with an. idle tienne: lending eitliei to an operatorie poeiiion oi. io i lii'et eeleotoiswitch.

A. feature of. the inveniioo. ie l; ie niei'lionivel stopping yoi a falling eau-.einige Wil-3h its Contact mm resting on a seloeted .movable terminal in suo-l1 o way time 'die eeieni'e of :i terminal will immediately ijiove the aei7- 'eieriring to the drawings, i. igoi'e l. Shows a front elevation. of n sel; oi' sul.)oeifibeife7 terminal rods and strips7 two 'ti-onli line een linges, the ieelaoling mechanism ond Cin- ",uite oy which the switches may be opem'lte'd; and Fig. shows :in end elemvtion of: the saone7 including the more impoilsent detailsn in switches of the type herein dieoloeed, the terminals of subscribers lines are represented by lioiizonml rode and strips, one of each being piovided fon eeen line, ind iL-lie tei'nfiinals oi? trunk linee ivepieeented by paire of veil-,ical wiiee, which mounted in groups oli' any desirable nuniliei loei'oie eeen of subeoiibeife teiininal inde and stripe. fi ezofiringe noi' 'lolly lie 'lui'ie iop of o pzrii' of ipionli Wi. i 1 eieiizieel lensed sind allowed to fall under die oit-in bien of' g ity when n subscriber Cells. lflie not. of o ing` displooes the eoliseifibene tefn'iinel rod so that an arm, pivowlly Xnoiinted on lie falling coi-ringe, will enges?, it, whopping y other om. .'ipniounln -e eiin., maken Ling on lie so that it will not be Seized 1" Linge which may falli' il.. i ed on but insulated from connection between ai eonoe subsei'ilevio tei'ininel min, o,

felling omi-inge. A conne plelneii between. a culling; trunk line. it the end olf lit is lnioonlied il? @99 lll'lliel@ the sam-inge is; o,iiiometioolly lifted to its nominal. posmion by :i liiid Wire parallel to the -runl wiieeD und the ibiunli line is rea-dy for use with folie nein; cell.

The ooiiseioelfim of the SWilLe-li will loe moi-e readily ,nnderel'ood 'fiom theifollowingj dem.. d des iiption. ii freine, oeilnin parte of wlijsoli .shown in me drawings, Sup-- end i eeifminol i f. enroinntee eide oi' osioli., saznlieeiibei-"i line held nem? eill: rigole 100. tend 'to im with the o1; 1 portion i021 ilireetly oel-ow the neming@ Od liliese oli'eets 1039 lnmeveif.'j when not nel ngo/inst the nipiigghte lUl., eo uliot oi. et orme Mill ineke en annie i ,p iieiiimo'foly do@ with the, vertical? i be iendii :een 'from Fig. 2.

.ein one end oi enen. .rod 10Q iigidli1 mount;-

ednn aiioiaqb n .lo :i tipping relay EUR. '.@Tie tip, i'elo fs; 'i l., :Lire individual Lo line and may oe inonn ...d on lie frame in any oonvenien manner. il/lien ai relay TR ie energized?. ily tipe .de i'od 1.05.2, So lzlmt odset 103 in position. to be engaged by en own of ifnlling carriage. ljefii'ied on. eeoii armature 1.05 is a, irod 106 placed so ne to eloee Contact springe 10?' wi/lien the armature 105 ie polled up.

The teiininel sti-ips 10i-3, in. which terminate one Side oi" sobeoiibei'@ line7 ai'e eau'- iied in. Slots i204.- of opi-ight@ 10i? :nid have Coiiieiel. elpiiiigg 109 .spaced inei'vnls coiresponding to die tionk wires and oaiifieges. 'ilie Contact springs 1.05) we in @miti-iet with nini of the ezii'iinggge during o eoiweiL I efi'fbioin in which. the :lied between winch nie peut iiij .1, subscribers set, wires 2 and 3, rod 102,

arm 201, carriage 113, wire 110, trunk wire 5 to ground. The relay RR closes at its front contact a circuit from battery through restoring magnet RM, bottom spring of oil1- normal spring ON to ground. The magnet RM thereupon becomes energizedand pulls up its armature 121, allowing barb 122 to catch pin 119 and hold it throughout the conversation. At the end of the convcrsation, when the subscriber hangs up, vhe breaks at his switchhool the circuit holding up relay RR, which thereupon allows its armature to fall back. The armature opens at its front contactthe circuit of the magnet RM, which then denergizes. When armature 121 falls back, it does not catch the pin 120, but allows it toslide over the lower face of barb 122, and spring 130 forces the drum 127, with its stop 212, into engagement with- .the catch 126. The shaft 128,v

which is constantly rotating, begins to wind the wire 1.12 on drum 127. When-block 125 reaches arm 116, it lifts the carriage 113 back to normal position. Just before normal position is reached, the arm 115 forces back bell crank 11,7 so that armature. 121 will engage pin 120. At its upper end, bell crank 117 `moves the drum 127 away from the catch 126,y whereupon springs 131 cause the drum 129 to wind back the wire 112,

and the switch is ready -for the next call. s

lf a second call comes in while the first switch is in use, a circuit will be closed from battery, contact springs v107, ofl`-normal spring N, springs 128, oii'-normal spring N2, starting magnet o1' the next switch SM2 to ground. The energization of mag net SM., will cause a connection to be completed in the same manner as has been previously described for the first switch. y

It is to benoted that contact springs 107 remain closed during the fall of the carriage :113, so that, to prevent the-starting of another switch` the starting circuit is broken at spring 128. In order that these springs shall remain open durin the fall of the carringe, starting magnet M is made slow to release, 'and will hold its armature up until 'the calling line has been seized.

lfVhat is claimed is:

1. In an automatic switch,V a gravity operated carriage, an arm on said carriage, stop members normally positioned out o1 the path ofmovement of said carriage arm, means for moving a selected' stop member into the path or' movement of said arm, and means controlled by the engagement; of an arm with the selected stop member for moving said stop member out of the path of movement of arms on subsequently operated carriages.

2. In an automatic switch, a gravity operated carriage, an arm on said carriage, stop members normally positioned .out of the path of movement oi" said carriage arm, electromagnetic means for moving a selected stop member into the path of movement ot said arm and holding it in said path, and. means controlled by the engagement of an arm with a selected stop member for moving said stop member out of the path of movement of arms on subsequently operated. carriages and stopping the carriage whose arm is engaged, said electromagnetic means serv'ijg to dissipate the momentum of said falling carriage. l,

3. In an automatic switch, movable rods in which subscriberslines terminate, a rod 1 being associated with each line, gravity operated carriages in which trunk' lines terminate,vsaid carriages being adapted when released to traverse and malte Contact with said rods, means operated on the initiation til] of a call for positioning a subscribes rod in the path of any carriage which may fall, and means actuated upon the operation of said means for releasing a carriage` 1. ln an automatic switch, movable rods and fixed terminal strips in which subscribers lines terminate, a rod and a strip being associated with each line, gravity operated carriages in which trunk lines terminate, each carriage being provided with means for connecting a selected rod and strip yto the trunk line with which Said carriageis associated, means for holding each carriage in normal position when its asso?y veiated trunk line is idle, said means oper-4 ating to prevent the fall of any other car-- riage during the fall of its associated carriage, means lfor moving a subscribers rod into selectable position upon the initiation of a call, and means operated upon the actuation of said rod-moving means for renden ing inefl'ective the holding means of a caryriage associated with an idle trunk.

In witness whereof, I hereunto subscribe. my name this 16th day of November, A. D. 1916.

raamt a. aannemer. 

